754. Noticeable peculiarities of form

The roots from which á-stems are made have certain noticeable peculiarities of form. Hardly any of them have long vowels, and none have long interior vowels; very few have final vowels; and none (save two or three transfers, and √lajjbe ashamed, which does not occur in any accentuated text, and is perhaps to be referred rather to the a-class) have a as radical vowel, except as this forms a combination with r, which is then reduced with it to ṛ or some of the usual substitutes of ṛ.